possible fix for #6313

6313.patch

diff --git a/proxy/http2/Http2Stream.cc b/proxy/http2/Http2Stream.cc
index f3519c390..e1301cc1e 100644
--- a/proxy/http2/Http2Stream.cc
+++ b/proxy/http2/Http2Stream.cc
@@ -666,15 +666,8 @@ Http2Stream::signal_read_event(int event)
     return;
   }

-  MUTEX_TRY_LOCK(lock, read_vio.cont->mutex, this_ethread());
-  if (lock.is_locked()) {
-    this->read_vio.cont->handleEvent(event, &this->read_vio);
-  } else {
-    if (this->_read_vio_event) {
-      this->_read_vio_event->cancel();
-    }
-    this->_read_vio_event = this_ethread()->schedule_imm(read_vio.cont, event, &read_vio);
-  }
+  SCOPED_MUTEX_LOCK(lock, read_vio.cont->mutex, this_ethread());
+  this->read_vio.cont->handleEvent(event, &this->read_vio);
 }

 void